Binder for loose-leaf ledgers.



N-0. s57.z5o. PATENTEDIJUNE is, 1907.

' 11.3. MOORE.

BINDER FOR LOOSE LEAF LEDGERS.

APPLIGATIQN FILED MAY z2. 190s.

A from/EK .1HE NuRms persas co., wAsHmcmN. n c.

UNITED sTArEs PATENT OFFICE.

HARRY R. MOORE, or wIOIII'r-A, KANsAs.

BINDER FOR LOOSE-LEAF LEDGERS.

Specication of Letters Patent.

Patented June 18, 1907.

Application filed May 22,1906. Serial No. 318,223.

To LZZ Lol/born t panty concern,.-

Be it known that I, HARRY R. MOORE, a

citizen of the United States, residing at tion has for its Object to provide improved.

means for expanding and contracting the book.

With these and other objects in view the invention embodies a binder having relatively movable binding strips which engage -the bound edges of the sheets with pressure.

The binder is provided with improved means for rapidly and conveniently operating the binding strips simultaneously.

One of the important features of the pres ent invention resides in the particular location and arrangement of the operating mechanism for the binding strips. This op erating mechanism is in line with the binding posts which are` arranged near each end of the binder, thus Obviating the necessity of additional space for the sheets back of the bind-' ing posts. This mechanism is also positioned i so that the strain thereon is in a direct line with the pressure on the sheets and therefore more positive in its action than mechanism having intermediate and adjunctive parts located back of the sheets.l

My invention is illustrated in the accompanying drawing in which Figure 1 is a plan Or inside view of my binder. Fig. 2 is a central longitudinal section of the same. Fig. 3 is a transverse sec tion on the line xof Fig. 1.

Making renewed reference to the drawings, 1 designates the back plate having upturned ends 2 and also upstanding ears 3 and 3 at the center and upon opposite side edges thereof.

4, designates one of the binding strips and .5 designates the other binding strip. These are arranged longitudinally of the back plate 1 upon Opposite sides thereof, and each. is provided with inwardly extending arms 6 at its ends, said arms being adapted to slide against the upturned ends 2 of thc back plate and be guided thereby.

7 designates the female members of an outer pair of posts, each member being attached to oppositelbinding strips 4 and 5 and projecting inwardly tow ard the opposite binding strip and over the ends of a male member 8 on which it telescopes, said male member being attached to Opposite binding strips as shown. A pair of inner telescoping posts are arranged with their female members 9 attached to opposite binding strips and to the binding strips to .which the male members 8 of the first mentioned pair are attached. These female members 9 telescope upon the male members 10 attached to opposite binding strips and to the binding strips to which the female members of the first mentioned pair are attached.

The operating mechanism for expanding and contracting the book or binding strips is preferably located at the center of the binder and in the space inclosed by the binding strips and their inturned ends, so that said mechanism is approximately in line with the telescoping posts. This operating mechanism consists of a threaded spindle 11 journaled in the ears 3 of the back plate and having one of itsA intles 12 projecting from one of said ears through an aperture 13 in the binding strip 5. The projection 12 is preferably formed angular in c-ross section, so that a key may be applied thereto to rotatethe spindle 11. Projecting inwardly from the binding strip 5 is a follower block 14 provided with a recess 15 and a sleeve or bridge 26 provided with a threaded bore 16, the thread extending from the inner to the outer end of the sleeve. The outer edges of this follower block are formed with racks 17 that engage pinions 18 j ournaled on studs 19 projecting upwardly from the back plate 1. T he pinions 18 mesh with racks 20 formed on the inner edges of a pair of arms 21 attached to the binding strip 4 and projecting in a direc tion opposite to the follower block 14. The outer edges of these arms 21 are engaged by anti-friction bearings 22 j ournalcd upon the studs 23 that project from thc back plate 1.

From the description thus far given it will be seen that when a key is applied to thc anguiar extension 12 of the spindle 11 the latter may be rotated in its bearing ears 3 and 3 which, boing attached to the back plate 1, are iixed with respect to the side binding strips 4 and 5, and thus the follower block 14 is caused to follow along the thread of the spindle 11 and may be brought to a position lOO where the shoulder 25 of the recess 15 abuts with the ear 3. As the follow block moves upon the spindle 11 it imparts motion to the two pinions 18 and they in turn impart 5 mo vement to the arms 2]. attached to the opposite binding stri 3 4, and thus cause the latter to move away from the back plate simultaneously with the outward movement of the binding strip 5 and its attached follower 1o block 14. This provides a very rapid ex pansion and contraction of thebinding strips, which, as may be seen, are movable relatively to each other and to the back plate 1 The bearing rollers 22 serve to I 5 guide the arms 21 and provide a perfect mesh of their racks with the pinions, so that bindingof the parts is obviated.

The members constituting thev follower block 14 may be'connected at their free ends zo by abridge portion 26, as shown in Fig. 3, or they may be separate and have their inner edges threaded and engaged with the threads of the spindle 11 (Fig. 1). The first construction, however, is not essential, as the 2 5 pinions 18 will suffice to hold the members of the follower block into intimate contact with the threads of the spindle. I also prefer to have one of the ears 3 and 3', and preferably the latter, formed with under-cut shoulders 3o 27 that overlie the members of the follower block 14 at. the edges of the 4recess 15`thereof', so that the follower block 14 will be guided and prevented from movingupwardly away from the back plate as it followsY back and 3 5 forthupon the spindle. This same ear also acts as a stop for thesaid follower when it has reached the end stroke, thus preventing the pinions from becoming disengagedfrom ftheir racks and the partsfrom beingy acci- 4o dentally disconnected.

Eachsheet a, one of which is shown in Fig.

2, is perforated to engage the pins or. telesco ing 1posts and its edge at its center is pre erab y cut away to clear the operating 45 mechanism, as shown in Fig. 2.

By arranging the operating mechanism on the inner side of the back plate 1, the back of the binder is unobstructed and it is not necessary to provide a chamber or space for suoli mechanism, andv by having the power 5o applied to mechanism parallel with the pins or posts, that is to say, having such mechanism arranged transversely of the binder, the actioniin compressing the leaves between the binding strips is more positive than when the 55 operating mechanism is connected to parts extending into a separate compartment back of the back plate and accessible from one end of the binder, as is the casein many of the de vices now infuse. 6o

Having thus described my invention, what l claim, anddes-ire to secure by Letters Pat'- ent is 1. In a loose leafbinder, the combination with the back plate and binding strips asso- 65 ciatedf therewith and provided with means for holding loose leaves, of a follower rigidly secured. to one of the binding strips, ears formed on the back plate, one of said ears extending over the follower to hold it to the 7o back plate, and a screw spindle journaled in the ears, extending transversely of the back plate and meshing with the follower.

2; Ina loose-leaf binder, the combination with a back plate, andfbinding strips asso- 7 5 oiated therewith andhavin0r means for holding loose leaves7 ofv means tor operating the binding strips comprising a threaded spindle mounted in the'back plateV and extending transversely thereof, a follower block engag- 8o ing saidl spindle and attached'to one of the binding strips, arms extending from the other bindin strip, and means engaging'the follower-bloc i and the varms for moving them 1in opposite directions, substantially as speci- 8 5 ed.

In testimony whereoflf affix my signature, in. presence -of two subscribing witnesses.

' HARRY R. MOORE.

Witnesses:

VEsrA A. CHARLTON, Roer. H. JOHNSTON. 

